Pump, compressor, and the like



s. 935 1L. Kay-Wm 2,016,605

PUMP, cou'PREssoR AND-THE LIKE I Filed Feb. 24, 1932 s Sheets-Sheet 1 ATTO EY Oct. 8, 1935.

J. KEMPTHORNE PUIP, COMPRESSOR AND THE LIKE Filed Feb. 24, 1932 3 Sheets-Sheet 2 1% EN TOR.

A TTO EY 1935. J. 1.. KEMF'THORNE PUMP, COMPRESSOR AND THE LIKE 5 Sheets-Shet 3 Filed Feb. 24, 1952- v fll Ezvn'.

ATT NEY.

Patented Oct. 8, 1935 ,iattt UNITED STATES PATENT OFFlCE 2,016,605 PUMP, COMPRESSOR, AND THE LIKE James L. Kempthorne, Montclair, N. J. Application February 24, 1932, Serial No. 594,789 8 Claims. (Cl. 103-442) This invention relates to an improved pump or compressor.

The pump or compressor by reason of the small number of parts and the compactness of the construction which latter characteristic makes the adapted for small installations such as domestic refrigerators.

The invention is illustrated in the accompanying drawings partly in central section, my invention. Figure 2 in which Figure 1 is an elevation, of a pump embodying is an end view with the face-plate of the pump removed. Figure 3 is a detail section illustrating Figure 4 is a central section pump. Figure 5 is an end the rotor in elevation.

of a modified form of view of the pump in Figure 4 with the face plate removed. Figure 6 is a longitudinal section of another modification.

Figure '7 is a detail section but with the rotor removed. on line 8-8 in Figure 6 on line I in Figure 6 Figure 8 is a section and Figure 9 is a view similar to Figure '7 showing the abutment plate turned at a right angle to ure 7. a

The simplest form is 3 and will be described first the showing in Figshown in Figures 1, 2 and The machine comprises the casing l0 made to conform to the place in which it is to be used. I show the casing as mounted on a foot or base-ll and supporting the bearing l2 of any desired construction. The

having the curved wall l4. wall and acting as a face plate l5 shown Opposite the curved closure for the chamber is a held in place by bolts I6.

The inside face I 1 of this plate is straight and smooth.

The rotor I8 is fitted inside the chamber of the casing and fits into the curved wall its outer surface two converging fiat faces is and 20. I install a sealing groove 22 in the rotor.

strip 2| in a half round The sealing strip has a fiat face against the face l1 and a rounded face in the groove 22 to enable the strip to rotate with the rotor by rocking in the groove.

This groove. 22

extends across the rotor at the place where the planes of two faces l9 and 20 converge. The

ends 2| of strip 2| are rounded on the same radius as that of the wall l4 and the rotor and its sealing strip form'a unit that rotates in the chamber in the casing and while the rotor rotates it and thus also to perthe shaft and rotor have the form shown comparticularly H but has on I to its axial position.

prise a slot 23 in the curved or rear face of the rotor and a square end 24 on the shaft l3. This square end 24 fits into the slot 23 and insures the turning of one with the other. I have shown an inlet port at 25 and an outlet port at 26. The end 5 24 of the shaft need not be square but can be of any polygonal shape that will insure the desired connection to permit the rocking of the rotor and also cause the rotation of the rotor. Suitable packing rings 21 can be installed for insuring 10 against leakage behind the sealing strip 2|. It will be noted that the sealing strip 2| serves to open and close the ports 25 and 26 as it rotates with the rotor l8.

As the rotor is rotated in the chamber of the 15 casing and against the flat surface I1, first one and then the other of the faces l9 and 20 is close up to the flat surface l1 and also alternate in occupying a position spaced from the flat surface II to form the fluid-receiving space 28. The axis 20 of the shaft I3 is at an angle to the plane of the surface l1 and bisects the surface I! at the center of the surface.

Assuming the pump is in the position shown in Figure 1 with one face I! of the rotor at the top 25 and the other face 20 of the rotor at the bottom, the space 28 is at its maximumopening and the corresponding space opposite the face I 9 at its' minimum having ejected its contents.

As the rotor begins to rotate in the direction of 30 the arrow in Figure 2 the rotor conforms to the shape of the curved wall I4 and the strip 2| is held against the face H. The rotor thus rotates gradually to the opposite half ofthe chamber in the casing and the face l9 slowly retreats from as the surface II exerting a suction on the port 25 which has been cleared by the strip 2|. The rotor when turned half a revolution has brought the face It! away from the surface l1 and the strip has shut off or nearly shut off the port 25. 40 This movement is possible by reason of the end 24 of the shaft l3 being sealed in the slot 23. The slot allows the rotor to conform to the different angular positions on the shaft l3 which is fixed as The axis of the shaft I3 is at an angle to the face l1. Assuming the rotor in position as in Figure l with the sealing strip 2| horizontal, one chamber only is open, that opposite the face 20 of the rotor. Now assuming a quarter turn of so the shaft I3 and the rotor Hi the sealing strip, bearing always against the surface I1, is vertical. The faces l9 and 20 of. the rotor are equidistant from the surface l1 and the two chambers are equal. Asthe rotor completes another quarter turn, the sealing strip 2| is again horizontal and one chamber has become entirely open and the one previously open is now shut. The tilting or rolling that the rotor does while the strip 2| is passing from, say, horizontal to vertical position, or vice versa, is possible by reason of the connection with the shaft that permits such movement. The square end 24 and the slot 23 are found to serve satisfactorily as such a connection. In comprehending themotions in this form of pump it must be observed that the strip 2| is at all times in contact with the face ll of the plate l5 and can be of any desired size according to the duties for which the pump is designed. In the absence of a sealing strip 2| the two faces l9 and 20 would come to a point in cross section which point would serve, of course, as the closure or separation between the two chambers formed opposite the faces l9 and 20. 3

A modified form of construction is shown Figures 4 and 5. The face plate I! is equipped with bearings 29. The bearings can be roller hearing or similar means in which a stud 30 rotates. The stud has an extension 3| projecting through the face plate. The sealing strip 2| is fastened to this extension 3| and they turn to gether. In this form I show the faces l1, l9 and 20 slightly curved. The term straight is used to define the faces shown in Figures 1 and 6 although the faces might be made curved as shown in Figures 4 and 5. The opposed faces, however, should be complementary in order to enable them to fit when the opposed faces are brought to gether.

In Figures 6, 7, 8 and 9, I show a further modification which contains a means for accurately regulating the time of opening-and closing the ports and also embodying a rotatable disc as the abutment piece or end plate opposite the converging fiat faces of the rotor. In this form the rotor operates the same and rocks in its rotation due to the slot 23 receiving the square end 24 of the shaft I3. The sealing strip 34, however, is cylindrical in cross section and is secured to the reduced end 32 of the shaft which receives the screw 33 which also passes into the sealing strip 34, Additional screws 35 on opposed sides of the shaft as shown in Figure '7 may be employed to secure the sealing strip to the rotor l8. The sealing strip is provided with a slot 36 to allow it to rock with the rotor I8 when the rotor rocks.

The rotor is opposite a disc 31 rotatable in the end plate l5, which is recessed to receive it. The face 38 of abutment disc 31 is in a plane passing through the center of the sealing strip and the disc has a recess 39 to receive one half the sealing strip. The packing 40 can be installed to insure a tight joint and thus prevent leakage around the strip 34. The disc 31 can be supported as by the central pin 4| which rotates with the disc 31 and is covered by a cap 42. The plate l5 has an inlet port 43 and an outlet port. In the disc 31 are ports usually in the form of slots. These slots are shown at 45 and 46 and it will be obvious that they can be proportioned to open or, close the ports 43 and 44, with which they come in register, atpredetermined times prior or subsequent to the complete closing of the chambers by the faces I9 and 20 of the rotor.

Various changes can be made in the form and proportion of the parts without departing from the scope of my invention.

I claim:

l. A compressor comprising a casing having a chamber having a curved face on one side and a straight face opposite the curved face, a rotor fitting the curved face and rotatable therein, said rotor having fiat faces converging toward the centre of the straight face, said rotor also having a diametrically arranged central portion in 5 contact with the fiat face of the chamber, and a shaft at an angle to the flat face of the chamber, the rotor and the shaft having co-acting means whereby the shaft and rotor can be rotated one from the other, the casing having inlet and outlet ports.

2. A compressor comprising a casing having a chamber with a curved surface and a flat surface opposite the curved surface, a rotor in the chamber, said rotor fitting the curved surface and having flat faces inclined relative to each other and having a diametrically arranged central portion to contact with the fiat surface and means for rotating the rotor, the casing having inlet and outlet ports. Y

3. A compressor comprising a casing with a substantially semi-spherical chamber with a curved surface and a flat surface, a rotor fitting part of the curved surface and having inclined faces, the planes of which converge the rotor hav- 25 ing a centrally arranged sealing part bearing against the fiat surface of the chamber, the casing having inlet and outlet ports.

4. A compressor comprising a casing having a chamber therein one inner face of which is sub- 30 'stantially semi-spherical, a rotor with one face fitting said face of the chamber and having converging faces on the other side of said rotor, a shaft to rotate the rotor and having co-acting means to allow said rotor to gyrate to a limited extent, the chamber having an inclined wall at an angle to the axis of the shaft said latter wall having its surface complementary to the converging faces of the rotor as the rotor approaches the successive areas of the said wall surface in the 40 rotation of the rotor, the casing having inlet and outlet ports.

5. A compressor or the like comprising a casing with a substantially semi-spherical chamber having a flat wall opposite the curved wall, a rotor 45 fitting the curved wall of the chamber and having flat faces, each face in a plane radial relative to the center of the curved wall and converging toward said center, the rotor contacting with the flat wall of the chamber across the centre thereof, 50 and a shaft seated in therotor and on an axial line bisecting the center of the fiat wall of the casing and inclined relative to said flat wall, and an operative connection between the rotor and the shaft for driving the rotor and constructed 55 to allow the rotor to rock on said shaft as the rotor rotates with its centre contacting with the said flat face of the chamber the casing having inlet and outlet ports.

6. A compressor or the like comprising a casing 50 with a substantially semi-spherical chamber having a flat wall opposite the curved wall, a rotor fitting the curved wall of the chamber and having fiat faces, each face in a plane radial relative to the center of the curved wall and converging toward said center, the rotor contacting with the flat wall of the chamber across the centre thereof. and a shaft seated in the rotor and. on an axial line bisecting the center of the flat wall of the casing and inclined relative to said flat wall, a square part on the shaft, the rotor having a slot parallel with and in line with the convergence line of the walls of the rotor, said slot receiving the square part of the shaft and thereby allowing 7 the rotor to rock as it revolves with the shaft, the casing having inlet and outlet ports.

7. A pump comprising a casing having a semispherical chamber therein, said chamber having a flat face opposite the curved wall, a rotor in the chamber and having flat convergent faces and having a central contacting portion to form a closure across the diameter of the flat face of the semi-spherical chamber, and means for rotating the rotor causing the said contacting portion to sweep around in contact with said flat face, the casing having inlet and outlet ports.

8. A device of the kind described comprising a casing with a chamber therein, one wall ofthe chamber being flat and the opposite wall being semi-spherical,.a rotor fitting part of the curved wall of the chamber and having converging flat faces, the portion or the rotor where the faces converge being constructed toform a diametrically disposed contact across the flat wall of the chamber and means for rotating the rotor on an axis inclined relative to the plane of the flat wall 10 of the chamber the casing having inlet and outlet ports.

JANE L. ORNE. 

